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Title: Deliquescence of NaCl-NaNO3 and KNO3-NaNO3 Salt Mixtures at 90C

Journal Article · · Chemical Geology
OSTI ID:15013656

We conducted reversed deliquescence experiments in saturated NaCl-NaNO3-H2O and KNO{sub 3}-NaNO{sub 3}-H{sub 2}O systems at 90 C to determine relative humidity and solution composition. NaCl, NaNO{sub 3}, and KNO{sub 3} represent members of dust salt assemblages that are likely to deliquesce and form concentrated brines on high-level radioactive waste package surfaces in a repository environment at Yucca Mountain, NV, USA. Model predictions agree with experimental results for the NaCl-NaNO{sub 3}-H{sub 2}O system, but underestimate relative humidity by as much as 8% and solution composition by as much as 50% in the KNO{sub 3}-NaNO{sub 3}-H{sub 2}O system.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
15013656
Report Number(s):
UCRL-JRNL-201647; CHGEAD; TRN: US200803%%1063
Journal Information:
Chemical Geology, Journal Name: Chemical Geology; ISSN 0009-2541
Country of Publication:
United States
Language:
English